Linked Questions

2
votes
2answers
5k views

How to derive address from private key? [duplicate]

I want to give users a private key so they can Easily get address.. Why? So a single series of digits enables them to have both public address and private key. Of course this is for temporary use ...
1
vote
3answers
2k views

How to generate multiple eth-addresses from one private key? [duplicate]

Is it possible to generate different multiple eth-addresses from one private key? The goal is to implement a JavaScript service that will allow a user to buy a subscription using cryptocurrency. ...
2
votes
0answers
859 views

Creating keyfile and address from private key [duplicate]

What is the logic behind Ethereum creating key file and account account address from the private key. I am able to import a ECDSA private key to create an account. Same account address is generated ...
0
votes
1answer
298 views

Ethereum wallet and private key [duplicate]

how to generate public and private key for each user on my decentralized app? After filling the app on ethereum network?
0
votes
1answer
60 views

How to generates the private and public key from a given name or address? [duplicate]

I want to generate both keys for transaction and also let me know how to calculate the processing time using solidity for the whole program?
2
votes
0answers
47 views

cryptography algorithm used in ethereum [duplicate]

what algorithm does ethereum use to generate public and private key pair. If i have both the keys how can i verify the match of the key in solidity, and how much gas does it cost? is it an expensive ...
59
votes
8answers
44k views

How can I check if an Ethereum address is valid?

I've read many times that you should never input an address by hand unless you want to accidentally send Ether into no-mans-land. I'd like to know what those checksums might be. Is there a way to tell ...
40
votes
2answers
29k views

Is Ethereum wallet address case sensitive?

I sent some amount of ETH to a wallet. I checked the wallets balance on ether chain. I entered the address in the search field and noticed both lowercase and uppercase versions of the address seemed ...
38
votes
3answers
16k views

Get public key of any ethereum account

Can I somehow get the public key of an ethereum account knowing just the corresponding ethereum address (e.g. 0x54dbb737eac5007103e729e9ab7ce64a6850a310)?
14
votes
2answers
2k views

What the difference between Bitcoin and Ethereum private/public keys and address?

I am trying to find a library for creating Ethereum wallets in a web environment (PHP, JS). I found Keytheremjs lib, but if use it in a browser, this tool is very slow. But I found a lot of simple PHP ...
21
votes
2answers
4k views

Is each Ethereum address shared by (theoretically) 2 ** 96 private keys?

Summary This is an extended question to How are ethereum addresses generated?. In Ethereum, a private key is 256-bit long, but an address is only 160-bit long. By "Pigeonhole Principle", it ...
15
votes
1answer
9k views

EthereumJS: How to get public key from private key

I am trying to create a private key and its corresponding public key using EthereumJS library. So far so good I've been able to create private keys using keythereum.create() method. Nevertheless I ...
6
votes
3answers
9k views

How to check for valid contract address using web3?

I am simply trying to avoid the error: Error: invalid address web3 throws this error when the address to a contract is not valid. Is there a way to catch this error ? I am using web3 in a nodejs ...
6
votes
4answers
14k views

Is there a simple Ethereum address generator that consists only of private key and public key?

I can go to https://www.bitaddress.org/ , download their software to my system, disconnect my system from the Internet, then move my mouse over their page randomly to generate entropy and then get a ...
14
votes
1answer
5k views

Location of public and private keys of Ethereum account

I want to know the details about key generation and handling in Parity. The questions listed are all related, so I put them all in this one question post. When a new Ethereum account is created on ...

15 30 50 per page